package com.shimakaze.reggie.controller;


import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.shimakaze.reggie.common.R;
import com.shimakaze.reggie.entity.User;
import com.shimakaze.reggie.service.UserService;
import com.shimakaze.reggie.utils.ValidateCodeUtils;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import java.util.Map;
import java.util.concurrent.TimeUnit;

@RestController
@RequestMapping("/user")
@Slf4j
public class UserController {

    @Autowired
    private UserService userService;

    @Autowired
    private RedisTemplate redisTemplate;

    /**
     * 发送手机短信验证码
     * @param user
     * @return
     */
    @PostMapping("/sendMsg")
    public R<String> sendMsg(@RequestBody User user, HttpSession session){
        //获取手机号码
        String phone = user.getPhone();
        if(StringUtils.isNotEmpty(phone)){

            //生成4位随机验证码
            String code = ValidateCodeUtils.generateValidateCode(4).toString();
            log.info("验证码: {}",code); //验证码直接从日志看！

            /**
             *   此处调用阿里云API发送短信（如果有的话）
             */

            //将生成的4位验证码缓存到session
            //session.setAttribute(phone,code);

            //将生成的4位验证码缓存到Redis中，并设置有效期5分钟
            redisTemplate.opsForValue().set(phone,code,5, TimeUnit.MINUTES);

            return R.success("手机验证码短信发送成功");
        }
        return R.error("手机验证码短信发送失败");
    }

    /**
     * 移动端用户登录
     * @param map
     * @param session
     * @return
     */
    @PostMapping("/login")
    public R<User> login(@RequestBody Map map, HttpSession session) {
        log.info(map.toString());
        //获取手机号码
        String phone = map.get("phone").toString();

        //获取验证码
        String code = map.get("code").toString();

        //从Session中获取保存的验证码
        //Object codeInSession = session.getAttribute(phone);

        //从Redis缓存获取验证码
        Object codeInSession = redisTemplate.opsForValue().get(phone);

        //比对验证码
        if(codeInSession != null && codeInSession.equals(code)){
        //if(codeInSession != null){
            //验证码比对成功则登录成功
            //判断当前手机号码对应的用户是否为新用户，如果是就添加到user表
            LambdaQueryWrapper<User> lambdaQueryWrapper = new LambdaQueryWrapper<>();
            lambdaQueryWrapper.eq(User::getPhone,phone);
            User user = userService.getOne(lambdaQueryWrapper);

            if(user == null){
                //为新用户
                user = new User();
                user.setPhone(phone);
                userService.save(user);
            }
            session.setAttribute("user",user.getId());

            //用户登录成功后删除Redis缓存中的验证码
            redisTemplate.delete(phone);

            return R.success(user);
        }

        return R.error("登录失败");
    }


    /**
     * 退出登录
     * @return
     */
    @PostMapping("/loginout")
    public R<String> loginout(HttpServletRequest request){
        request.getSession().removeAttribute("user");
        return R.success("退出登录成功");
    }
}
